/*
 Wotonomy: OpenStep design patterns for pure Java applications.
 Copyright (C) 2000 Blacksmith, Inc.

 This library is free software; you can redistribute it and/or
 modify it under the terms of the GNU Lesser General Public
 License as published by the Free Software Foundation; either
 version 2.1 of the License, or (at your option) any later version.

 This library is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 Lesser General Public License for more details.

 You should have received a copy of the GNU Lesser General Public
 License along with this library; if not, see http://www.gnu.org
 */

package net.wotonomy.web;

import net.wotonomy.foundation.NSArray;
import net.wotonomy.foundation.NSDictionary;

/**
 * Used to generate any HTML element dynamically. It only creates the opening
 * tag without a closing tag. To generate HTML elements that have opening and
 * closing tags, as well as some content in between, use WOGenericContainer
 * instead.
 * 
 * @author michael@mpowers.net
 * @author $Author: cgruber $
 * @version $Revision: 905 $
 */
public class WOGenericElement extends WODynamicElement {

	static NSArray bindings = new NSArray(new Object[] { "elementName", "omitTags", "elementID", "otherTagString",
			"formValue", "formValues", "invokeAction" });

	public WOGenericElement() {
		super();
	}

	public WOGenericElement(String n, NSDictionary m, WOElement t) {
		super(n, m, t);
	}

	public String elementName(WOContext c) {
		String x = (String) valueForProperty("elementName", c.component());
		if (x != null)
			return x;
		return c.elementID();
	}

	public void takeValuesFromRequest(WORequest r, WOContext c) {
		if (c.elementID().equals(c.senderID())) {
			Object value;
			value = r.formValueForKey(c.elementID());
			setValueForProperty("formValue", value, c.component());
			value = r.formValuesForKey(c.elementID());
			setValueForProperty("formValues", value, c.component());
		}
	}

	public WOActionResults invokeAction(WORequest r, WOContext c) {
		WOActionResults result = null;
		String action = stringForProperty("invokeAction", c.component());
		if (action != null && c.elementID().equals(c.senderID())) {
			result = c.component().performAction(action);
		}
		return result;
	}

	public void appendToResponse(WOResponse r, WOContext c) {
		WOComponent component = c.component();
		if (!booleanForProperty("omitTags", component)) {
			r.appendContentString("<");
			r.appendContentString(elementName(c));
			String other = stringForProperty("otherTagString", component);
			if (other != null) {
				r.appendContentString(" ");
				r.appendContentString(other);
			}
			String add = additionalHTMLProperties(component, bindings);
			if (add.length() > 0)
				r.appendContentString(add);
			r.appendContentString(">");
		}
		setValueForProperty("elementID", c.elementID(), component);
	}

}